BBMak

From Discogs:

An English pop group, together they sold nearly 3 million albums worldwide since 1999. The group disbanded in 2003.

From Lastfm:

BBMak was an English pop group formed in England, UK in 1999, consisting of Mark Barry, Christian Burns and Stephen McNally. Together they've sold nearly 3 million albums worldwide. In the beginning, the band's sound was a mixture of pop-rock, soul and folk music. Their first album "Sooner or Later" was released in 2000 and sold over one million copies. BBmak's single "Back Here" was a worldwide hit, reaching #5 on the UK Charts, #13 on the US Billboard Hot 100 Chart and #1 on the US Adult Contemporary Chart. However, the album "Into Your Head" introduced a "nu-breed" sound, with more emphasis on harmonies.

The guys broke up in 2003 and are all working on their solo material.

From Wikipedia:

BBMak (Barry, Burns, McNally) were an English pop group consisting of Mark Barry, Christian Burns and Stephen McNally. Together they sold nearly three million albums and spawned two Top 10 and Top 40 singles worldwide between 1999 when the group was formed and 2003 when they eventually disbanded. The band guest starred on Disney's television show, Even Stevens in 2001.